Jeff Rowland Coherence One - As Traded

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  • Regular price $3,500.00

Jeff Rowland Coherence One Preamplifier - Preamp with Complete Phono Stage

Condition: Used in Good Condition

Here is a piece of audio history. A great 2 piece box preamplifier from Jeff Rowland in great working order. The preamp features a full MM/MC Phono stage but is not remote controlled.

This unit has been fully tested and checked by a technician and is excellent working order. However, due to its age is sold as is.


Phono Section: RIAA Deviation:  20 Hz - 20 kHz ±0,15 dB

Input Impedance:  0 to 100 Ω, user adj. 47 k Ω for MM

Equiv. Input Noise:  less that 1 nanovolt per square root Hz

Gain:  40 dB MM at 1 kHz, 60 dB MC at 1 kHz

Line Section: Frequency Response:  0,2 Hz to 500 kHz -3 dB

Input Impedance:  10k Ω

Output Impedance:  100 Ω

Gain:  20 dB

Distortion:  less that 0,05% THD or IM below rated output

Signal-to-Noise ratio:  greater than 92 dB A referred to rated output

Rated Output:  5 volts RMS

Power Supply: Transformer:  30 VA encapsulated toroidal

Capacity:  10,000 microfarads total